Finding the Fourth Proportional to 31,123.70, 42,949.02 and 17,693.12

Step by Step Solution

1. Step 1: Write the proportion equation
   31,123.70 : 42,949.02 = 17,693.12 : x
2. Step 2: Convert to fraction form
   31,123.70/42,949.02 = 17,693.12/x
3. Step 3: Cross multiply
   31,123.70x = 42,949.02 × 17,693.12
4. Step 4: Simplify right side
   31,123.70x = 759,902,164.74
5. Step 5: Solve for x
   x = 759,902,164.74/31,123.70
6. Step 6: Final answer
   x = 24,415.55